First edition. Tan cloth over brown boards with gilt stamping on the front cover and spine, pictorial dust jacket. Riobóo's specialty is the artful use of mathematical principles and psychological subtleties, concealed and designed to produce experiences that defy understanding. And when you least expect it, he may throw in a judicious touch of sleight-of-hand or a prepared card. The combination produces slack-jawed wonder and a sense of delight. Used, but near fine condition.
